body {
  padding: 50px;
  font: 1em '微软雅黑',"Lucida Grande", Helvetica, Arial, sans-serif;
}

section.container{
	text-align: center;
	font-size: 2em;
}
.login{
	width: 400px;
	margin: auto;
}
input.ng-invalid{
	border: 1px solid red;
}
input.ng-valid{
border: 1px solid green;
}